A bivariate variable is a type of variable that involves two variables and examines their relationship with each other. It explores how changes in one variable affect the other.
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Categorical Variable: A categorical variable can be one of the variables involved in a bivariate analysis, where its categories are compared to another variable.
Scatterplot: A scatterplot is a graphical representation used to display bivariate data. It shows how two variables are related by plotting their values on a coordinate plane.
Correlation Coefficient: The correlation coefficient measures the strength and direction of the linear relationship between two quantitative variables. It ranges from -1 to 1, where -1 indicates a perfect negative relationship, 0 indicates no relationship, and 1 indicates a perfect positive relationship.